bsv-1.5s12r0h XP Power Limited, bsv-1.5s12r0h Datasheet - Page 36

• Manufacturer Part Number: bsv-1.5s12r0h
• Description: Pol Dc-dc Converter
• Manufacturer: XP Power Limited

8-3. Adjusting Output Voltage
To set within the range of 0.8V-1.8V
R1=47000(Ω), R2=63800(Ω), I1=0.000028186(A), Vout=Requested output voltage (V)
8-4. Sensing function
8-5. P-Good Function
HIGH SPEED LOAD RESPONSE, OUTPUT VOLTAGE SETTING ACCURACY±1% POL DC-DC Converter
Rx
Ex.)
Output Voltage
When using at 1.8V without adjusting output voltage, keep Trim pin (7pin) open. By connecting a resistor between Trim
(7pin) and GND pin (5pin), the output voltage can be adjusted within the range of 0.8-1.8V.
When adjusting the output voltage, please be careful not to draw around the wire of Trim pin. If the Trim pin catches noise,
malfunction may occur.
To calculate the external resistance, please refer to the equation below. After calculating the external resistance, please
check the output voltage and adjust the resistance value.
An excellent load regulation characteristic can be obtained by using the sensing function on the load side.
Make sure to connect the +Vout pin (4 pin) and +Sense pin (3 pin) as close to each other as possible.
By utilizing this P-Good pin (2 pin), the output condition of the converter can be obtained.
This terminal is open-drain. If using P-Good function, please use P-Good terminal
connecting the resistor outside and pulling-up to the input voltage. (5.5V max.)
It may become low when output voltage (+Sense voltage) is very different from the voltage set by the converter.
It will be open by
Vout<1.2V : |Output voltage-Set voltage|≦0.076V typ.
Vout≧1.2V : |Output voltage-Set voltage|≦6.25%typ. of set voltage.
However, under the conditions written below, even if the output voltage is
within this range, it may become low.
- At standing up. (4ms typ.)
- When the input voltage is below 3V
- When the output current is at over-current state.
- When the IC temperature is above 100°C
=
Vout (V)
Desired
R
1.8
1.5
1.2
1.0
0.8
2
DC-DC Converter
R
×
2
×
I
- 1
Vout
Vout
Calculated Value
-
R
( 1
273.85
Ω
Open
80.97
32.92
(kΩ)
4.13
Rx
)
or
on/off
+Vin
1
9
GND
5,8
30kΩ
I1
GND
5
R1
+Vout
4
3
+Sense
Trim
7
Rx
BSV-HE Series
BDD20090116
8